omap: mux: Add new style pin multiplexing data for 34xx

Add new style mux data for 34xx. This should also
work with 3630 easily by adding the processor subset
and ball data.

Note that this data is __initdata, and gets optimized
out except for the GPIO pins if CONFIG_OMAP_MUX
is not set.

Also note that this data uses omap3630 naming for
the SDMMC registers instead of 34xx naming with just
MMC.

Cc: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>